GRD0243S0
RAMA7-Dr22-2
Amphibolite
Mesozoic › Jurassic › Late Jurassic
145.5
-
161.0
1
Ritter 154 › Cabinet 37 › Drawer D
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Medium-sized (~7x3.5x4.5 cm from the cut face) cut sample. Black crystalline with a patchy white rind. Billet pieces. Original label: 28 November, 1980.
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RAMA 7 Dredge 22
Pacific Ocean
Mariana Trench. Original: 11 29.7N, 142 11.6E to 11 30.1N, 142 11.2E. Depth: -7800 to -7680.
Latitude: 11.495°
Longitude: 142.193333°
-7740.0 m a.s.l.
N/A
Amphibole, OPX, and feldspar
2.5
plane
Amphibole, OPX, and feldspar
2.5
crossed
-
scan
crossed
GRD0243T0: Thin section is carbon-coated. 75% amphibole (green-brown pleochroic) and 25% plagioclase (polysynthetic twinning), minor amount of orthopyroxene; clusters of opx? (C. Eichler)
N/A
N/A